| * Copyright 2011 Tilera Corporation. All Rights Reserved. |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation, version 2. |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| * NON INFRINGEMENT. See the GNU General Public License for |
| #include <linux/string.h> |
| #include <linux/module.h> |
| #include "string-endian.h" |
| size_t strlen(const char *s) |
| /* Get an aligned pointer. */ |
| const uintptr_t s_int = (uintptr_t) s; |
| const uint64_t *p = (const uint64_t *)(s_int & -8); |
| /* Read and MASK the first word. */ |
| uint64_t v = *p | MASK(s_int); |
| while ((bits = __insn_v1cmpeqi(v, 0)) == 0) |
| return ((const char *)p) + (CFZ(bits) >> 3) - s; |